CN112188276A - Channel switching method and display device - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
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- H—ELECTRICITY
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- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
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Abstract
The application discloses a channel switching method and display equipment, which are used for directly finding out signaling data corresponding to another channel from cached signaling data when a currently played channel is required to be switched to another channel on a frequency point, so that the channel switching efficiency is improved. The method comprises the following steps: when a picture is played through a first channel of a designated frequency point, acquiring and caching channel identifiers of all channels on the designated frequency point and corresponding signaling data; filtering a first audio/video clip played through the first channel according to first signaling data corresponding to the first channel; when the first channel needs to be switched to the second channel of the appointed frequency point, second signaling data corresponding to the second channel is obtained from the cached signaling data, and a second audio and video clip played through the second channel is filtered according to the second signaling data.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a channel switching method and a display device.
Background
In the ATSC3.0 (Advanced Television Systems Committee 3.0, american digital Television national standard 3.0 version) protocol and Service, a channel play needs to collect an SLT (Service List Table), an IP address and a port number corresponding to a channel to be played are confirmed from the SLT, and signaling data of the channel is acquired according to the IP address and the port number to filter out an audio and video clip played through the channel.
When switching channels, signaling data needs to be collected again to obtain signaling data of switching channels, and the time for collecting signaling data is long, which results in low efficiency of switching channels.
Disclosure of Invention
The application discloses a channel switching method and display equipment, which aim to improve the channel switching efficiency.
According to a first aspect of embodiments of the present application, there is provided a display apparatus including:
a display;
a controller coupled with the display and configured to:
when a picture is played through a first channel of a designated frequency point, acquiring and caching channel identifiers of all channels on the designated frequency point and corresponding signaling data; filtering a first audio/video clip played through the first channel according to first signaling data corresponding to the first channel;
when the first channel needs to be switched to the second channel of the appointed frequency point, second signaling data corresponding to the second channel is obtained from the cached signaling data, and a second audio and video clip played through the second channel is filtered according to the second signaling data.
Optionally, the first channel is a first played channel in the designated frequency point.
Optionally, the obtaining and caching the channel identifiers of all channels on the designated frequency point and the corresponding signaling data by the controller includes:
analyzing the collected SLT to obtain a channel identifier corresponding to each channel of the designated frequency point in the SLT;
and receiving signaling data corresponding to each channel of the designated frequency point input from the outside.
Optionally, the SLT and the signaling data are input from the outside through different data packets, the SLT corresponds to one data packet, and the signaling data corresponds to at least one data packet.
Optionally, the channel identifier at least includes an IP address and a port number corresponding to the channel.
According to a second aspect of the embodiments of the present application, there is provided a channel switching method, including:
when a picture is played through a first channel of a designated frequency point, acquiring and caching channel identifiers of all channels on the designated frequency point and corresponding signaling data; filtering a first audio/video clip played through the first channel according to first signaling data corresponding to the first channel;
when the first channel needs to be switched to the second channel of the appointed frequency point, second signaling data corresponding to the second channel is obtained from the cached signaling data, and a second audio and video clip played through the second channel is filtered according to the second signaling data.
Optionally, the first channel is a first played channel in the designated frequency point.
Optionally, the obtaining and caching the channel identifiers of all channels on the designated frequency point and the corresponding signaling data includes:
analyzing the collected SLT to obtain a channel identifier corresponding to each channel of the designated frequency point in the SLT;
and receiving signaling data corresponding to each channel of the designated frequency point input from the outside.
Optionally, the SLT and the signaling data are input from the outside through different data packets, the SLT corresponds to one data packet, and the signaling data corresponds to at least one data packet.
Optionally, the channel identifier at least includes an IP address and a port number corresponding to the channel.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
according to the technical scheme, the signaling data of all the channels on a certain frequency point (designated frequency point) can be obtained and cached when the channel is played on the frequency point, so that when the currently played channel is required to be switched to another channel on the frequency point, the signaling data corresponding to the other channel can be directly found from the cached signaling data, the time consumed by channel switching is reduced, and the channel switching efficiency is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments consistent with the present application and together with the application, serve to explain the principles of the application.
Fig. 1A is a schematic diagram illustrating an operation scenario between the display device 200 and the control apparatus 100;
fig. 1B is a block diagram schematically illustrating a configuration of the control apparatus 100 in fig. 1A;
fig. 1C is a block diagram schematically illustrating a configuration of the display device 200 in fig. 1A;
FIG. 1D is a block diagram illustrating an architectural configuration of an operating system in memory of display device 200;
fig. 2 is a time slice diagram of channel switching at a same frequency point in the ATSC3.0 service in the related art;
FIG. 3 is a flow chart of a method provided herein;
fig. 4 is a time slice diagram of channel switching of the same frequency point provided in the present application.
Detailed Description
To make the objects, embodiments and advantages of the present application clearer, the following description of exemplary embodiments of the present application will clearly and completely describe the exemplary embodiments of the present application with reference to the accompanying drawings in the exemplary embodiments of the present application, and it is to be understood that the described exemplary embodiments are only a part of the embodiments of the present application, and not all of the embodiments.
All other embodiments, which can be derived by a person skilled in the art from the exemplary embodiments described herein without making any inventive step, are within the scope of protection of the present application. In addition, while the disclosure herein has been presented in terms of one or more exemplary examples, it should be appreciated that aspects of the disclosure may be implemented solely as a complete embodiment.
It should be noted that the brief descriptions of the terms in the present application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of the present application. These terms should be understood in their ordinary and customary meaning unless otherwise indicated.
The terms "first," "second," "third," and the like in this application are used for distinguishing between similar or analogous objects or entities and are not necessarily meant to define a particular order or sequence Unless otherwise noted (Unless thermally induced). It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.
Furthermore, the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or device that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such product or device.
In order to facilitate understanding of the embodiments provided in the present application, the following first describes the structure of the display device and the interaction process between the display device and the control device:
fig. 1A is a schematic diagram illustrating an operation scenario between the display device 200 and the control apparatus 100. As shown in fig. 1A, the control apparatus 100 and the display device 200 may communicate with each other in a wired or wireless manner.
Among them, the control apparatus 100 is configured to control the display device 200, which may receive an operation instruction input by a user and convert the operation instruction into an instruction recognizable and responsive by the display device 200, serving as an intermediary for interaction between the user and the display device 200. Such as: the user operates the channel up/down key on the control device 100, and the display device 200 responds to the channel up/down operation.
The control device 100 may be a remote controller 100A, which includes infrared protocol communication or bluetooth protocol communication, and other short-distance communication methods, etc. to control the display apparatus 200 in a wireless or other wired manner. The user may input a user instruction through a key on a remote controller, voice input, control panel input, etc., to control the display apparatus 200. Such as: the user can input a corresponding control command through a volume up/down key, a channel control key, up/down/left/right moving keys, a voice input key, a menu key, a power on/off key, etc. on the remote controller, to implement the function of controlling the display device 200.
The control device 100 may also be an intelligent device, such as a mobile terminal 100B, a tablet computer, a notebook computer, and the like. For example, the display device 200 is controlled using an application program running on the smart device. The application program may provide various controls to a user through an intuitive User Interface (UI) on a screen associated with the smart device through configuration.
For example, the mobile terminal 100B may install a software application with the display device 200 to implement connection communication through a network communication protocol for the purpose of one-to-one control operation and data communication. Such as: the mobile terminal 100B may be caused to establish a control instruction protocol with the display device 200 to implement the functions of the physical keys as arranged in the remote control 100A by operating various function keys or virtual buttons of the user interface provided on the mobile terminal 100B. The audio and video content displayed on the mobile terminal 100B may also be transmitted to the display device 200, so as to implement a synchronous display function.
The display apparatus 200 may be implemented as a television, and may provide an intelligent network television function of a broadcast receiving television function as well as a computer support function. Examples of the display device include a digital television, a web television, a smart television, an Internet Protocol Television (IPTV), and the like.
The display device 200 may be a liquid crystal display, an organic light emitting display, a projection display device. The specific display device type, size, resolution, etc. are not limited.
The display apparatus 200 also performs data communication with the server 300 through various communication means. Here, the display apparatus 200 may be allowed to be communicatively connected through a Local Area Network (LAN), a Wireless Local Area Network (WLAN), and other networks. The server 300 may provide various contents and interactions to the display apparatus 200. By way of example, the display device 200 may send and receive information such as: receiving Electronic Program Guide (EPG) data, receiving software program updates, or accessing a remotely stored digital media library. The servers 300 may be a group or groups of servers, and may be one or more types of servers. Other web service contents such as a video on demand and an advertisement service are provided through the server 300.
Fig. 1B is a block diagram illustrating the configuration of the control device 100. As shown in fig. 1B, the control device 100 includes a controller 110, a memory 120, a communicator 130, a user input interface 140, an output interface 150, and a power supply 160.
The controller 110 includes a Random Access Memory (RAM)111, a Read Only Memory (ROM)112, a processor 113, a communication interface, and a communication bus. The controller 110 is used to control the operation of the control device 100, as well as the internal components of the communication cooperation, external and internal data processing functions.
Illustratively, when an interaction of a user pressing a key disposed on the remote controller 100A or an interaction of touching a touch panel disposed on the remote controller 100A is detected, the controller 110 may control to generate a signal corresponding to the detected interaction and transmit the signal to the display device 200.
And a memory 120 for storing various operation programs, data and applications for driving and controlling the control apparatus 100 under the control of the controller 110. The memory 120 may store various control signal commands input by a user.
The communicator 130 enables communication of control signals and data signals with the display apparatus 200 under the control of the controller 110. Such as: the control apparatus 100 transmits a control signal (e.g., a touch signal or a button signal) to the display device 200 via the communicator 130, and the control apparatus 100 may receive the signal transmitted by the display device 200 via the communicator 130. The communicator 130 may include an infrared signal interface 131 and a radio frequency signal interface 132. For example: when the infrared signal interface is used, the user input instruction needs to be converted into an infrared control signal according to an infrared control protocol, and the infrared control signal is sent to the display device 200 through the infrared sending module. The following steps are repeated: when the rf signal interface is used, a user input command needs to be converted into a digital signal, and then the digital signal is modulated according to the rf control signal modulation protocol and then transmitted to the display device 200 through the rf transmitting terminal.
The user input interface 140 may include at least one of a microphone 141, a touch pad 142, a sensor 143, a key 144, and the like, so that a user can input a user instruction regarding controlling the display apparatus 200 to the control apparatus 100 through voice, touch, gesture, press, and the like.
The output interface 150 outputs a user instruction received by the user input interface 140 to the display apparatus 200, or outputs an image or voice signal received by the display apparatus 200. Here, the output interface 150 may include an LED interface 151, a vibration interface 152 generating vibration, a sound output interface 153 outputting sound, a display 154 outputting an image, and the like. For example, the remote controller 100A may receive an output signal such as audio, video, or data from the output interface 150, and display the output signal in the form of an image on the display 154, in the form of audio on the sound output interface 153, or in the form of vibration on the vibration interface 152.
And a power supply 160 for providing operation power support for each element of the control device 100 under the control of the controller 110. In the form of a battery and associated control circuitry.
A hardware configuration block diagram of the display device 200 is exemplarily illustrated in fig. 1C. As shown in fig. 1C, the display apparatus 200 may further include a tuner demodulator 210, a communicator 220, a detector 230, an external device interface 240, a controller 250, a memory 260, a user interface 265, a video processor 270, a display 275, an audio processor 280, an audio input interface 285, and a power supply 290.
The tuner demodulator 210 receives the broadcast television signal in a wired or wireless manner, may perform modulation and demodulation processing such as amplification, mixing, and resonance, and is configured to demodulate, from a plurality of wireless or wired broadcast television signals, an audio/video signal carried in a frequency of a television channel selected by a user, and additional information (e.g., EPG data).
The tuner demodulator 210 is responsive to the user selected frequency of the television channel and the television signal carried by the frequency, as selected by the user and controlled by the controller 250.
The tuner demodulator 210 can receive a television signal in various ways according to the broadcasting system of the television signal, such as: terrestrial broadcasting, cable broadcasting, satellite broadcasting, internet broadcasting, or the like; and according to different modulation types, a digital modulation mode or an analog modulation mode can be adopted; and can demodulate the analog signal and the digital signal according to the different kinds of the received television signals.
In other exemplary embodiments, the tuning demodulator 210 may also be in an external device, such as an external set-top box. In this way, the set-top box outputs a television signal after modulation and demodulation, and inputs the television signal into the display apparatus 200 through the external device interface 240.
The communicator 220 is a component for communicating with an external device or an external server according to various communication protocol types. For example, the display apparatus 200 may transmit content data to an external apparatus connected via the communicator 220, or browse and download content data from an external apparatus connected via the communicator 220. The communicator 220 may include a network communication protocol module or a near field communication protocol module, such as a WIFI module 221, a bluetooth communication protocol module 222, and a wired ethernet communication protocol module 223, so that the communicator 220 may receive a control signal of the control device 100 according to the control of the controller 250 and implement the control signal as a WIFI signal, a bluetooth signal, a radio frequency signal, and the like.
The detector 230 is a component of the display apparatus 200 for collecting signals of an external environment or interaction with the outside. The detector 230 may include an image collector 231, such as a camera, a video camera, etc., which may be used to collect external environment scenes to adaptively change the display parameters of the display device 200; and the function of acquiring the attribute of the user or interacting gestures with the user so as to realize the interaction between the display equipment and the user. A light receiver 232 may also be included to collect ambient light intensity to adapt to changes in display parameters of the display device 200, etc.
In some other exemplary embodiments, the detector 230 may further include a temperature sensor, such as by sensing an ambient temperature, and the display device 200 may adaptively adjust a display color temperature of the image. For example, when the temperature is higher, the display apparatus 200 may be adjusted to display a color temperature of an image that is cooler; when the temperature is lower, the display device 200 may be adjusted to display a warmer color temperature of the image.
In some other exemplary embodiments, the detector 230, which may further include a sound collector, such as a microphone, may be configured to receive a sound of a user, such as a voice signal of a control instruction of the user to control the display device 200; alternatively, ambient sounds may be collected that identify the type of ambient scene, enabling the display device 200 to adapt to ambient noise.
The external device interface 240 is a component for providing the controller 210 to control data transmission between the display apparatus 200 and an external apparatus. The external device interface 240 may be connected to an external apparatus such as a set-top box, a game device, a notebook computer, etc. in a wired/wireless manner, and may receive data such as a video signal (e.g., moving image), an audio signal (e.g., music), additional information (e.g., EPG), etc. of the external apparatus.
The external device interface 240 may include: a High Definition Multimedia Interface (HDMI) terminal 241, a Composite Video Blanking Sync (CVBS) terminal 242, an analog or digital Component terminal 243, a Universal Serial Bus (USB) terminal 244, a Component terminal (not shown), a red, green, blue (RGB) terminal (not shown), and the like.
The controller 250 controls the operation of the display device 200 and responds to the operation of the user by running various software control programs (such as an operating system and various application programs) stored on the memory 260.
As shown in fig. 1C, the controller 250 includes a Random Access Memory (RAM)251, a Read Only Memory (ROM)252, a graphics processor 253, a CPU processor 254, a communication interface 255, and a communication bus 256. The RAM251, the ROM252, the graphic processor 253, and the CPU processor 254 are connected to each other through a communication bus 256 through a communication interface 255.
The ROM252 stores various system boot instructions. When the display apparatus 200 starts power-on upon receiving the power-on signal, the CPU processor 254 executes a system boot instruction in the ROM252, copies the operating system stored in the memory 260 to the RAM251, and starts running the boot operating system. After the start of the operating system is completed, the CPU processor 254 copies the various application programs in the memory 260 to the RAM251 and then starts running and starting the various application programs.
A graphic processor 253 for generating screen images of various graphic objects such as icons, images, and operation menus. The graphic processor 253 may include an operator for performing an operation by receiving various interactive instructions input by a user, and further displaying various objects according to display attributes; and a renderer for generating various objects based on the operator and displaying the rendered result on the display 275.
A CPU processor 254 for executing operating system and application program instructions stored in memory 260. And according to the received user input instruction, processing of various application programs, data and contents is executed so as to finally display and play various audio-video contents.
In some example embodiments, the CPU processor 254 may comprise a plurality of processors. The plurality of processors may include one main processor and a plurality of or one sub-processor. A main processor for performing some initialization operations of the display apparatus 200 in the display apparatus preload mode and/or operations of displaying a screen in the normal mode. A plurality of or one sub-processor for performing an operation in a state of a standby mode or the like of the display apparatus.
The communication interface 255 may include a first interface to an nth interface. These interfaces may be network interfaces that are connected to external devices via a network.
The controller 250 may control the overall operation of the display apparatus 200. For example: in response to receiving a user input command for selecting a GUI object displayed on the display 275, the controller 250 may perform an operation related to the object selected by the user input command.
Where the object may be any one of the selectable objects, such as a hyperlink or an icon. The operation related to the selected object is, for example, an operation of displaying a link to a hyperlink page, document, image, or the like, or an operation of executing a program corresponding to an icon. The user input command for selecting the GUI object may be a command input through various input means (e.g., a mouse, a keyboard, a touch panel, etc.) connected to the display apparatus 200 or a voice command corresponding to a user uttering voice.
A memory 260 for storing various types of data, software programs, or applications for driving and controlling the operation of the display device 200. The memory 260 may include volatile and/or nonvolatile memory. And the term "memory" includes the memory 260, the RAM251 and the ROM252 of the controller 250, or a memory card in the display device 200.
In some embodiments, the memory 260 is specifically used for storing an operating program for driving the controller 250 of the display device 200; storing various application programs built in the display apparatus 200 and downloaded by a user from an external apparatus; data such as visual effect images for configuring various GUIs provided by the display 275, various objects related to the GUIs, and selectors for selecting GUI objects are stored.
In some embodiments, the memory 260 is specifically configured to store drivers and related data for the tuner demodulator 210, the communicator 220, the detector 230, the external device interface 240, the video processor 270, the display 275, the audio processor 280, and the like, external data (e.g., audio-visual data) received from the external device interface, or user data (e.g., key information, voice information, touch information, and the like) received from the user interface.
In some embodiments, memory 260 specifically stores software and/or programs representing an Operating System (OS), which may include, for example: a kernel, middleware, an Application Programming Interface (API), and/or an application program. Illustratively, the kernel may control or manage system resources, as well as functions implemented by other programs (e.g., the middleware, APIs, or applications); at the same time, the kernel may provide an interface to allow middleware, APIs, or applications to access the controller to enable control or management of system resources.
A block diagram of the architectural configuration of the operating system in the memory of the display device 200 is illustrated in fig. 1D. The operating system architecture comprises an application layer, a middleware layer and a kernel layer from top to bottom.
The application layer, the application programs built in the system and the non-system-level application programs belong to the application layer and are responsible for direct interaction with users. The application layer may include a plurality of applications such as NETFLIX applications, setup applications, media center applications, and the like. These applications may be implemented as Web applications that execute based on a WebKit engine, and in particular may be developed and executed based on HTML, Cascading Style Sheets (CSS), and JavaScript.
Here, HTML, which is called HyperText Markup Language (HyperText Markup Language), is a standard Markup Language for creating web pages, and describes the web pages by Markup tags, where the HTML tags are used to describe characters, graphics, animation, sound, tables, links, etc., and a browser reads an HTML document, interprets the content of the tags in the document, and displays the content in the form of web pages.
CSS, known as Cascading Style Sheets (Cascading Style Sheets), is a computer language used to represent the Style of HTML documents, and may be used to define Style structures, such as fonts, colors, locations, etc. The CSS style can be directly stored in the HTML webpage or a separate style file, so that the style in the webpage can be controlled.
JavaScript, a language applied to Web page programming, can be inserted into an HTML page and interpreted and executed by a browser. The interaction logic of the Web application is realized by JavaScript. The JavaScript can package a JavaScript extension interface through a browser, realize the communication with the kernel layer,
the middleware layer may provide some standardized interfaces to support the operation of various environments and systems. For example, the middleware layer may be implemented as multimedia and hypermedia information coding experts group (MHEG) middleware related to data broadcasting, DLNA middleware which is middleware related to communication with an external device, middleware which provides a browser environment in which each application program in the display device operates, and the like.
The kernel layer provides core system services, such as: file management, memory management, process management, network management, system security authority management and the like. The kernel layer may be implemented as a kernel based on various operating systems, for example, a kernel based on the Linux operating system.
The kernel layer also provides communication between system software and hardware, and provides device driver services for various hardware, such as: provide display driver for the display, provide camera driver for the camera, provide button driver for the remote controller, provide wiFi driver for the WIFI module, provide audio driver for audio output interface, provide power management drive for Power Management (PM) module etc..
A user interface 265 receives various user interactions. Specifically, it is used to transmit an input signal of a user to the controller 250 or transmit an output signal from the controller 250 to the user. For example, the remote controller 100A may transmit an input signal, such as a power switch signal, a channel selection signal, a volume adjustment signal, etc., input by the user to the user interface 265, and then the input signal is transferred to the controller 250 through the user interface 265; alternatively, the remote controller 100A may receive an output signal such as audio, video, or data output from the user interface 265 via the controller 250, and display the received output signal or output the received output signal in audio or vibration form.
In some embodiments, a user may enter user commands on a Graphical User Interface (GUI) displayed on the display 275, and the user interface 265 receives the user input commands through the GUI. Specifically, the user interface 265 may receive user input commands for controlling the position of a selector in the GUI to select different objects or items.
Alternatively, the user may input a user command by inputting a specific sound or gesture, and the user interface 265 receives the user input command by recognizing the sound or gesture through the sensor.
The video processor 270 is configured to receive an external video signal, and perform video data processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, and image synthesis according to a standard codec protocol of the input signal, so as to obtain a video signal that is directly displayed or played on the display 275.
Illustratively, the video processor 270 includes a demultiplexing module, a video decoding module, an image synthesizing module, a frame rate conversion module, a display formatting module, and the like.
The demultiplexing module is configured to demultiplex an input audio/video data stream, where, for example, an input MPEG-2 stream (based on a compression standard of a digital storage media moving image and voice), the demultiplexing module demultiplexes the input audio/video data stream into a video signal and an audio signal.
And the video decoding module is used for processing the video signal after demultiplexing, including decoding, scaling and the like.
And the image synthesis module is used for carrying out superposition mixing processing on the GUI signal input by the user or generated by the user and the video image after the zooming processing by the graphic generator so as to generate an image signal for display.
The frame rate conversion module is configured to convert a frame rate of an input video, for example, convert a frame rate of an input 60Hz video into a frame rate of 120Hz or 240Hz, where a common format is implemented by using, for example, an interpolation frame method.
And a display formatting module for converting the signal output by the frame rate conversion module into a signal conforming to a display format of a display, such as converting the format of the signal output by the frame rate conversion module to output an RGB data signal.
And a display 275 for receiving the image signal from the output of the video processor 270 and displaying video, images and menu manipulation interfaces. For example, the display may display video from a broadcast signal received by the tuner demodulator 210, may display video input from the communicator 220 or the external device interface 240, and may display an image stored in the memory 260. The display 275, while displaying a user manipulation interface UI generated in the display apparatus 200 and used to control the display apparatus 200.
And, the display 275 may include a display screen assembly for presenting a picture and a driving assembly for driving the display of an image. Alternatively, a projection device and projection screen may be included, provided display 275 is a projection display.
The audio processor 280 is configured to receive an external audio signal, decompress and decode the received audio signal according to a standard codec protocol of the input signal, and perform audio data processing such as noise reduction, digital-to-analog conversion, and amplification processing to obtain an audio signal that can be played by the speaker 286.
Illustratively, audio processor 280 may support various audio formats. Such as MPEG-2, MPEG-4, Advanced Audio Coding (AAC), high efficiency AAC (HE-AAC), and the like.
In other exemplary embodiments, video processor 270 may comprise one or more chips. Audio processor 280 may also comprise one or more chips.
And, in other exemplary embodiments, the video processor 270 and the audio processor 280 may be separate chips or may be integrated with the controller 250 in one or more chips.
And a power supply 290 for supplying power supply support to the display apparatus 200 from the power input from the external power source under the control of the controller 250. The power supply 290 may be a built-in power supply circuit installed inside the display apparatus 200 or may be a power supply installed outside the display apparatus 200.
In order to facilitate understanding of the embodiments provided herein, the following description of the related art in the embodiments of the present application is first made:
optionally, the embodiment of the present application is applied to a display device using ATSC3.0 (Advanced Television Systems Committee 3.0, version 3.0 of national digital Television standard in the united states) protocol. In the service defined by the ATSC3.0 protocol, a time slice diagram of channel broadcast at the same frequency point is shown in fig. 2. In fig. 2, when the display device is initialized, that is, when the display device plays an audio/video picture through a channel (a first channel marked as a designated frequency point) in a certain frequency point, the SLT is collected, an IP address and a port number of the first channel are obtained by analyzing the SLT, signaling data (marked as first signaling data) corresponding to the first channel is collected and obtained according to the IP address and the port number of the first channel, and an audio/video segment to be played through the first channel is filtered from description information of the first signaling data. However, when a video picture is played through a first channel of an assigned frequency point, the collected signaling data is not cached, so when the first channel needs to be switched to another channel of the assigned frequency point (marked as a second channel), the signaling data needs to be collected again, the signaling data corresponding to the second channel (marked as the second signaling data) is obtained according to the IP address and the port number corresponding to the second channel, and then an audio/video segment to be played through the second channel is filtered from the second signaling data.
In the above channel switching process, collecting signaling data is a time-consuming process, for example, it takes 500ms to collect signaling data, which is too long, and thus the channel switching efficiency is not high.
In the above description, how the display device implements the same-frequency channel switching in the service specified in the ATSC3.0 protocol in the background art is described in an embodiment, the method provided in this embodiment of the present application will be described below.
Referring to fig. 3, fig. 3 is a flow chart of a method provided by the present application. As an embodiment, the flow shown in fig. 3 is applied to a display device. The display device is the display device described above with reference to fig. 1A to 1D. The process may include the steps of:
step 301: when a picture is played through a first channel of a designated frequency point, acquiring and caching channel identifiers of all channels on the designated frequency point and corresponding signaling data; and filtering a first audio and video clip played through the first channel according to first signaling data corresponding to the first channel.
As an example, the first channel in step 301 may be a channel in which a first picture is played in the display device among the designated frequency points.
As another embodiment, the first channel in step 301 may also be a channel that plays a picture in the display device when the display device receives a message that the channel identification information of the channel on the designated frequency point changes. Because the channel identification information of the channel on the designated frequency point changes, the channel identifications of all the channels on the designated frequency point and the corresponding signaling data are obtained and cached again when the current channel plays a picture.
In the specific implementation, the channel identifiers of all channels on the designated frequency point and the corresponding signaling data are obtained and cached in step 301. The channel identification at least comprises an IP address and a port number corresponding to the channel, the specifically acquired channel identification is obtained by analyzing the collected SLT, so as to obtain the channel identification corresponding to each channel on the appointed frequency point, the SLT is issued by an operator, and when a picture is played through the channel on the appointed frequency point, the display equipment can receive the SLT of the appointed frequency point issued by the operator.
In this embodiment, the SLT of the designated frequency point is generated based on the ATSC3.0 protocol, and includes a channel number, and an IP address and a port number corresponding to each channel on the designated frequency point. The SLT is used for indicating that all channels in the SLT are on a designated frequency point; the number of the secondary channel of each channel of the designated frequency point is different, so as to identify each channel and the corresponding IP address and port number of each channel. In a specific implementation, the positions of all channels on the designated frequency point in the SLT may be arranged in series according to the number of the secondary channel.
Correspondingly, the signaling data at least comprises channel identifiers, namely IP addresses and port numbers corresponding to the channels, and playing channels of audio and video clips played through the corresponding channels. The signaling data is also sent by the operator, and is sent together with the SLT of the previous designated frequency point.
Further, the SLT and the signaling data are in different data packets, the SLT being transmitted via a separate data packet, and the signaling data being transmitted via another data packet. One frequency point has only one SLT data packet, but has a plurality of signaling data packets. One of the channels also corresponds to a plurality of data packets of the signaling data, and the audio/video segments indicated by the signaling data in the data packets are different.
In this embodiment, the specific implementation manner of filtering the first audio/video segment played through the first channel according to the first signaling data corresponding to the first channel in step 301 is as follows: firstly, acquiring first signaling data by judging whether an IP address and a port number in the collected signaling data are consistent with an IP address and a port number corresponding to a first channel, and if so, determining the signaling data to be the first signaling data corresponding to the first channel; and then filtering out a first audio and video clip played through a first channel according to a channel for playing the audio and video clip described in the first signaling data.
Step 302: when the first channel needs to be switched to the second channel of the appointed frequency point, second signaling data corresponding to the second channel is obtained from the cached signaling data, and a second audio and video clip played through the second channel is filtered according to the second signaling data.
As an embodiment, after obtaining the signaling data of each channel of the designated frequency point, the signaling data may be classified and cached according to the channel, or may be directly cached. Thus, there are various ways to obtain the second signaling data corresponding to the second frequency channel from the buffered signaling data: when the signaling data is cached in a classified manner, the second signaling data corresponding to the second channel may be obtained according to the set classification identifier of the second signaling data (for example, an IP address and a port number corresponding to the second channel, or a secondary channel number of the channel); when the signaling data is directly cached, the corresponding second signaling data can be directly found according to the corresponding IP address and port number of the second channel. The above embodiment of acquiring the second signaling data is only for ease of understanding and is not particularly limited.
The flow shown in fig. 3 is completed.
Further, in the embodiment of the present application, a time slice diagram of channel playing of the same frequency point is shown in fig. 4. In fig. 4, when the display device is initialized, that is, when the display device plays an audio/video screen through the first channel of the designated frequency point, the SLT corresponding to the frequency point is collected and analyzed, and then signaling data of all channels for the designated frequency point pair is collected and cached. When the first channel is required to be switched to the second channel of the designated frequency point, because the signaling data of all the channels are cached, the second signaling data corresponding to the second channel can be directly obtained from the cached signaling data, and then the audio and video clips to be played through the second channel are filtered from the second signaling data. In this embodiment, when the channel switching at the same frequency point is performed, the time required for acquiring the signaling data from the buffer is short, for example, 0.1ms, which greatly improves the efficiency of channel switching compared with the time consumed for collecting the signaling data during channel switching in the background art.
As can be seen from the process shown in fig. 3, in the embodiment of the present application, when one channel of a certain frequency point (designated frequency point) is played, signaling data of all channels on the frequency point can be obtained and cached, so that when a currently played channel needs to be switched to another channel on the frequency point, signaling data corresponding to another channel can be directly found from the cached signaling data, time consumed by channel switching is reduced, and efficiency of channel switching is improved.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.
Claims (10)
1. A display device, comprising:
a display;
a controller coupled with the display and configured to:
when a picture is played through a first channel of a designated frequency point, acquiring and caching channel identifiers of all channels on the designated frequency point and corresponding signaling data; filtering a first audio/video clip played through the first channel according to first signaling data corresponding to the first channel;
when the first channel needs to be switched to the second channel of the appointed frequency point, second signaling data corresponding to the second channel is obtained from the cached signaling data, and a second audio and video clip played through the second channel is filtered according to the second signaling data.
2. The display device according to claim 1, wherein the first channel is a channel that is played first in a designated frequency point.
3. The display device according to claim 1, wherein the controller obtaining and caching the channel identifiers of all channels on the designated frequency point and the corresponding signaling data comprises:
analyzing the collected SLT to obtain a channel identifier corresponding to each channel of the designated frequency point in the SLT;
and receiving signaling data corresponding to each channel of the designated frequency point input from the outside.
4. The display device according to claim 3, wherein the SLT and the signaling data are inputted from outside through different data packets, the SLT corresponds to one data packet, and the signaling data corresponds to at least one data packet.
5. The display device according to claim 1, wherein the channel identifier at least comprises an IP address and a port number corresponding to the channel.
6. A channel switching method is applied to a display device and comprises the following steps:
when a picture is played through a first channel of a designated frequency point, acquiring and caching channel identifiers of all channels on the designated frequency point and corresponding signaling data; filtering a first audio/video clip played through the first channel according to first signaling data corresponding to the first channel;
when the first channel needs to be switched to the second channel of the appointed frequency point, second signaling data corresponding to the second channel is obtained from the cached signaling data, and a second audio and video clip played through the second channel is filtered according to the second signaling data.
7. The method of claim 6, wherein the first channel is a channel that is broadcast first in a designated frequency bin.
8. The method according to claim 6, wherein the obtaining and caching the channel identifiers of all the channels on the designated frequency point and the corresponding signaling data comprises:
analyzing the collected SLT to obtain a channel identifier corresponding to each channel of the designated frequency point in the SLT;
and receiving signaling data corresponding to each channel of the designated frequency point input from the outside.
9. The method of claim 8, wherein the SLT and the signaling data are inputted from outside through different data packets, wherein the SLT corresponds to one data packet, and wherein the signaling data corresponds to at least one data packet.
10. The method of claim 6, wherein the channel identifier at least comprises an IP address and a port number corresponding to the channel.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101521767A (en) * | 2009-03-31 | 2009-09-02 | 深圳创维数字技术股份有限公司 | Frequency channel searching method, frequency channel searching system and DTV receiving terminal |
| CN101836444A (en) * | 2007-08-24 | 2010-09-15 | Lg电子株式会社 | Digital broadcasting receiver and method for controlling the same |
| CN107295392A (en) * | 2017-08-04 | 2017-10-24 | 青岛海信电器股份有限公司 | The processing method and processing device of HBBTV applications |
| CN107683608A (en) * | 2015-06-16 | 2018-02-09 | 索尼公司 | Receiving device, send equipment and data processing method |
| CN108337570A (en) * | 2017-01-17 | 2018-07-27 | 三星电子株式会社 | Electronic device, its control method and computer readable storage medium |
| CN111050207A (en) * | 2019-12-05 | 2020-04-21 | 海信电子科技（深圳）有限公司 | Television channel switching method and television |
-
2020
- 2020-09-30 CN CN202011066115.2A patent/CN112188276A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101836444A (en) * | 2007-08-24 | 2010-09-15 | Lg电子株式会社 | Digital broadcasting receiver and method for controlling the same |
| CN101521767A (en) * | 2009-03-31 | 2009-09-02 | 深圳创维数字技术股份有限公司 | Frequency channel searching method, frequency channel searching system and DTV receiving terminal |
| CN107683608A (en) * | 2015-06-16 | 2018-02-09 | 索尼公司 | Receiving device, send equipment and data processing method |
| CN108337570A (en) * | 2017-01-17 | 2018-07-27 | 三星电子株式会社 | Electronic device, its control method and computer readable storage medium |
| CN107295392A (en) * | 2017-08-04 | 2017-10-24 | 青岛海信电器股份有限公司 | The processing method and processing device of HBBTV applications |
| CN111050207A (en) * | 2019-12-05 | 2020-04-21 | 海信电子科技（深圳）有限公司 | Television channel switching method and television |
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